/**
 * 班级操行分管理系统 - 学生管理函数
 * 
 * 开发者: Canglan
 * 联系方式: admin@sea-studio.top
 * 版权归属: Sea Network Technology Studio
 * 许可证: MIT License
 * 
 * 版权所有 © Sea Network Technology Studio
 */

(function() {
    'use strict';

    // 显示新增学生模态框
    function showAddStudentModal() {
        document.getElementById('addStudentModal').style.display = 'flex';
        document.getElementById('addStudentForm').reset();
    }

    // 提交新增学生
    async function submitAddStudent() {
        const studentNo = document.getElementById('studentNo').value.trim();
        const name = document.getElementById('studentName').value.trim();
        const parentPhone = document.getElementById('parentPhone').value.trim();
        
        if (!studentNo || !name) {
            showToast('请填写学号和姓名', 'warning');
            return;
        }
        
        const res = await apiPost('/api/admin/students', {
            student_no: studentNo,
            name: name,
            parent_phone: parentPhone,
            dormitory_number: document.getElementById('addDormitoryNumber').value.trim()
        });
        
        if (res && res.success) {
            showToast('学生添加成功');
            closeModal('addStudentModal');
            loadStudents();
        } else {
            showToast(res?.message || '添加失败', 'error');
        }
    }

    // 显示编辑学生模态框
    function showEditStudentModal(studentId, studentNo, name, phone, dormitoryNumber) {
        document.getElementById('editStudentId').value = studentId;
        document.getElementById('editStudentNo').value = studentNo;
        document.getElementById('editStudentName').value = name;
        document.getElementById('editStudentPhone').value = phone || '';
        document.getElementById('editDormitoryNumber').value = dormitoryNumber || '';
        document.getElementById('editStudentModal').style.display = 'flex';
    }

    // 提交编辑学生
    async function submitEditStudent() {
        const studentId = document.getElementById('editStudentId').value;
        const name = document.getElementById('editStudentName').value.trim();
        const phone = document.getElementById('editStudentPhone').value.trim();
        
        if (!name) {
            showToast('请输入姓名', 'warning');
            return;
        }
        
        const res = await apiPut(`/api/admin/students/${studentId}`, {
            name: name,
            parent_phone: phone || null,
            dormitory_number: document.getElementById('editDormitoryNumber').value.trim()
        });
        
        if (res && res.success) {
            showToast('学生信息更新成功');
            closeModal('editStudentModal');
            location.reload();
        } else {
            showToast(res?.message || '更新失败', 'error');
        }
    }

    // 显示重置学生密码模态框
    function showResetStudentPasswordModal(studentId, name) {
        document.getElementById('resetStudentId').value = studentId;
        document.getElementById('resetStudentInfo').textContent = `正在重置学生 "${name}" 的密码`;
        document.getElementById('newStudentPassword').value = '';
        document.getElementById('resetStudentPasswordModal').style.display = 'flex';
    }

    // 提交重置学生密码
    async function submitResetStudentPassword() {
        const studentId = document.getElementById('resetStudentId').value;
        const newPassword = document.getElementById('newStudentPassword').value;
        
        if (!newPassword || newPassword.length < 6) {
            showToast('密码至少6位', 'warning');
            return;
        }
        
        const res = await apiPost(`/api/admin/students/reset-password/${studentId}`, {
            new_password: newPassword
        });
        
        if (res && res.success) {
            showToast('密码重置成功');
            closeModal('resetStudentPasswordModal');
        } else {
            showToast(res?.message || '重置失败', 'error');
        }
    }

    // 删除学生
    async function deleteStudent(studentId, name) {
        if (!confirm(`确定要删除学生 "${name}" 吗？删除后学生账号将被禁用。`)) return;
        
        const res = await apiDelete(`/api/admin/students/${studentId}`);
        
        if (res && res.success) {
            showToast('学生删除成功');
            location.reload();
        } else {
            showToast(res?.message || '删除失败', 'error');
        }
    }

    // 显示导入模态框
    function showImportModal() {
        document.getElementById('importModal').style.display = 'flex';
        document.getElementById('importPreview').style.display = 'none';
        document.getElementById('importPreview').innerHTML = '';
        document.getElementById('importBtn').style.display = 'none';
        document.getElementById('importFile').value = '';
    }

    // 预览导入文件
    function previewImportFile() {
        const file = document.getElementById('importFile').files[0];
        if (!file) return;
        
        const reader = new FileReader();
        reader.onload = function(e) {
            try {
                const data = JSON.parse(e.target.result);
                const students = data.students || [];
                
                let html = '<h4>预览数据</h4><div class="table-wrapper"><table><thead><tr>';
                html += '<th>学号</th><th>姓名</th><th>家长手机号</th><th>初始密码</th>';
                html += '</tr></thead><tbody>';
                
                students.forEach(s => {
                    html += `<tr>
                        <td>${escapeHtml(s.student_no || '')}</td>
                        <td>${escapeHtml(s.name || '')}</td>
                        <td>${escapeHtml(s.parent_phone || '')}</td>
                        <td>${escapeHtml(s.password || '123456')}</td>
                    </tr>`;
                });
                
                html += `</tbody></table></div><p>共 ${students.length} 条记录，初始操行分默认为60分</p>`;
                document.getElementById('importPreview').innerHTML = html;
                document.getElementById('importPreview').style.display = 'block';
                document.getElementById('importBtn').style.display = 'inline-block';
            } catch (error) {
                showToast('JSON格式错误', 'error');
            }
        };
        reader.readAsText(file);
    }

    // 执行导入
    async function doImport() {
        const file = document.getElementById('importFile').files[0];
        if (!file) {
            showToast('请选择文件', 'warning');
            return;
        }
        
        const formData = new FormData();
        formData.append('file', file);
        
        const token = getToken();
        const response = await fetch(`${API_BASE_URL}/api/admin/students/import`, {
            method: 'POST',
            headers: {
                'Authorization': `Bearer ${token}`
            },
            body: formData
        });
        
        const result = await response.json();
        
        if (result.success) {
            showToast(result.message);
            closeModal('importModal');
            loadStudents();
            
            // 显示详细导入结果
            if (result.data && result.data.results) {
                const failedList = result.data.results.filter(r => !r.success);
                if (failedList.length > 0) {
                    let detail = '失败详情：\n';
                    failedList.forEach(r => {
                        detail += `${r.student_no || '未知'}: ${r.error}\n`;
                    });
                    alert(detail);
                }
            }
        } else {
            showToast(result.message, 'error');
        }
    }

    // 绑定文件选择事件
    document.addEventListener('DOMContentLoaded', () => {
        const fileInput = document.getElementById('importFile');
        if (fileInput) {
            fileInput.addEventListener('change', previewImportFile);
        }
    });

    window.showAddStudentModal = showAddStudentModal;
    window.submitAddStudent = submitAddStudent;
    window.showEditStudentModal = showEditStudentModal;
    window.submitEditStudent = submitEditStudent;
    window.showResetStudentPasswordModal = showResetStudentPasswordModal;
    window.submitResetStudentPassword = submitResetStudentPassword;
    window.deleteStudent = deleteStudent;
    window.showImportModal = showImportModal;
    window.previewImportFile = previewImportFile;
    window.doImport = doImport;
})();